摘要
建立了基于激光光束变换的气门座激光相变硬化温度场数值模拟模型,分析了激光功率、激光加热面积以及激光加热时间对激光相变硬化气门座温度场的影响。结果表明:随着激光功率的增加,气门座峰值温度升高,在激光加载结束时刻,加载区域两侧温度梯度增大。随着激光加热面积的增加,加载区域峰值温度降低,激光加载结束时两侧区域温度升高、温度梯度减小。随着激光加热时间的增加,气门座峰值温度升高,激光加载结束时加载区域两侧温度梯度小幅度增加。
A numerical simulation model of laser phase transformation hardening temperature field for valve seat based on laser beam transformation was established.The effects of laser power,laser heating area and laser heating time on the temperature field of laser phase transformation hardening valve seat were analyzed.The results show that,with the increase of laser power,the peak temperature of the valve seat increases.At the end of laser loading,the temperature gradient at both sides of the loading area increases.With the increase of laser heating area,the peak temperature of the loading region decreases,the temperature of both sides increases and the temperature gradient decreases at the end of laser loading.With the increase of laser heating time,the peak temperature of the valve seat increases,and the temperature gradient at both sides of the loading area increases slightly at the end of laser loading.
作者
庞铭
谭雯丹
张啸寒
江国业
付威
PANG Ming;TAN Wendan;ZI-IANG Xiaohan;JIANG Guoye;FU Wei(Airport College,Civil Aviation University of China,Tianjin 300300,China)
出处
《热加工工艺》
CSCD
北大核心
2018年第22期202-205,共4页
Hot Working Technology
关键词
激光
光束变换
相变硬化
温度场
laser
beam transformation
phase transformation hardening
temperature field
